Kac <br/><br/>
Infinite-Dimensional Lie Algebras 

 -  Cambridge University Press  Cambridge University Press  1990 
<br/><br/><label>ISBN: </label>9780511626234 
<br/><br/><label>Source: </label>EBOOK 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mathematics